Title :
High-power high-speed photodetectors-design, analysis, and experimental demonstration
Author :
Lin, L.Y. ; Wu, M.C. ; Itoh, T. ; Vang, T.A. ; Muller, R.E. ; Sivco, D.L. ; Cho, A.Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
A novel velocity-matched distributed photodetector (VMDP) is proposed to simultaneously achieve high saturation photocurrent and broad bandwidth. Theoretical analysis on the tradeoff between saturation power and bandwidth shows that the VMDP offers fundamental advantages over conventional photodetectors. A comprehensive theoretical model has been developed for the design and simulation of the VMDP. Experimentally, the VMDP with very high saturation (56-mA) photocurrent and instrument-limited 3-dB bandwidth (49 GHz) has been demonstrated. The theoretical analysis and experimental results show that the VMDP is very attractive for high-performance microwave photonic links and high-power optical microwave applications
Keywords :
metal-semiconductor-metal structures; microwave generation; optical fibre communication; optical links; photodetectors; photodiodes; 49 GHz; 56 mA; MSM photodiodes; VMDP; bandwidth; coplanar transmission lines; high-speed photodetectors; instrument-limited 3-dB bandwidth; microwave photonic links; optical microwave applications; saturation photocurrent; saturation power; velocity-matched distributed photodetector; Bandwidth; High speed optical techniques; Microwave devices; Optical fiber cables; Optical receivers; Optical saturation; Optical waveguides; Photoconductivity; Photodetectors; Photodiodes;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
